Clamp



FIG. 1 is a front, left, and top perspective view of a clamp showing my new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view thereof in use.

The broken lines depict environment that forms no part of the claimed design. 

CLAIM The ornamental design for a clamp, as shown and described. 